Timothy holland



N0 me T. HOLLAND.

sTEA-.M BUTLER.

Patented June 5, 1883.

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'UNITED STATES PATENT OFFICE.

TIMOTHY HOLLAND, OF TROY, NEWT YORK.v

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 278,963, dated June 5, 1,883. Application filed March 9, 1R83. (No model.)

To a/ZZ whom it may concern:

Be it known that l, TIMOTHY HOLLAND, of Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a full, clear, and exact description. Y

Reference is to be had to the accompanying drawings, forming partof this specification, in whichsimilar letters of reference indicate corresponding parts in all the iigures.

Figure l is a sectional side elevationof my improvement. Fig. 2 is a sectional end elevation of the same, taken through the line .r w, Fig. l. Fig. 3 is a sectional side elevation of one of the boiler-tubes enlarged. Fig. 4 is a cross-section of the tubes on an enlarged scale.

The object of this invention is to facilitate the generatingof steam for heating and power purposes.

The invention consists in a steam-boiler constructed with a shell having transverse flues and pipes projecting outward through the lirechamber, closed at their outer ends by couplings, valve-disks, and screw-plugs, and provided wit-h interior concentric pipes supported in place by radial pins or skeleton disks. The boiler shell is provided with a series of projecting pipes arranged to support the top of the inclosing brick-work, whereby the lbrickwork, supports are made to assist in generating steam, and thus increase the steam-generating capacity of the boiler, as will be hereinafter fully described.

A represents the brick-work of the furnace.

B is the fire-grate, which is supplied with fuel through the door-way or chute C. The smoke escapes to the chimney through the flue R. i

D is the upright boiler-shell, which rests upon the bridge-wall E of the fire chamber, and its upper end rises above the brick-work A, and with it is connected the steam-pipe F,

through which the steam is conducted to lthe Aplace where it is to be used.

Through the boiler-shell D,. just below the top brick-work, A, are formed a number of iiues, G, through which the products of coinbustion pass from the forward to the rear part of. the rechamber, the said iiues passing through the waterspace of the boiler, so as to communicate to the water the heat received from the passing products of combustion.

W'ith the Vforward and rear walls of the boiler -shell D are connected the ends of a number of pipes, H, the inner ends of which open into the water space of the shell D. Upon the outer end of each pipe Hv is screwed a coupling, I, in the middle part of which is formed a tapered or beveled valve seat, J. Into the valve-seat J is fitted a disk, K, having a correspondingly-shaped edge, andwhich is pressed into and held in its seat by the plug L, screwed into the outer end of the coupling I.

Vithin each pipe H is placed a smaller pipe, M, open at both ends, and held concentric with the said pipe H by radial pins N, screwed into the said pipe M by skeleton disks or by other suitable means. Vth this construction thewater in the space between the pipes H M will be heated, and will ow back into the shell D, causing the cooler water in the said shell to flow outward through the interior pipes, M, thus producing a circulation. Vith this construction also, by removing the screwplugs L, the valve-disks K, and the interior pipes, M, the exterior pipes, H, canv be readily cleaned by an instrument inserted through the outer ends ofthe said pipes.

Vith the boiler-shell D, above the iiues G, are connected the inner ends of pipes H', which are provided with interior pipes, end couplings, valve-disks, and screw-plugs in the .sa-me manner as the pipes H, and which are utilized to support the top brick-work, A, the outer ends of the said pipes resting upon bars O, laid in the brick-work, as shown in Fig. l.. through the spaces between the innern ends of the pipes H into the space P, surrounding the upper part ofthe boiler-shell D. The feedwater is introduced into the lower part of the boiler-shell D through the pipe Q. Vit-h this construction a large quantity of water in thin sheets will be exposed directly to the action of the heat, so that steam willbegeneratcd rapidly and in large quantities.

The products of combustion pass Having thus described my in vention, I claim as new and desire to secure by Letters Patentl. Astea-m-boiler constructed with a shell provided with transverse flues, and provided IOO with pipes projecting outward through the fire-chamber, having their outer` ends closed by couplings, Valve disks, and screw plugs, und haw/'ing incerioi` concentric pipes, as setforth.

2. In a steam-boiler, the combination, with the boiler-pipes H, of Jnhe screw-couplings I, having Valve-seats J, the vulve-disks K, and

the screw-plugs L, substantially as herein shown and described, whereby convenient ac- 1o cess can be had to the interior of the said pipes, as set forth.

TIMOTHY HOLLAND. XVitnesses:

JOHN F. THoMPsoN, CHARLES T. FINN. 

